Form and form holder for concrete wall and arch construction



H CONSTRUCTION April 7, 1 931 H. L. FELDBLET FORM AND FORM HOLDER FOR CONCRETE WALL AND ARC Original Filed June 6, 192a 4 Sheets-Sheet 1 April 7, 1931. H. L. FELDBLET 1,799,505

FORM AND FORM HOLDER FOR CONCRETE WALL AND ARCH CONSTRUCTION Original Filed June 6, 1928 4 Sheets-Sheet 2 Apr I' 7, 1931. H. FELDBLET FORM AND FORM HOLDER FOR CONCRETE WALL AND ARCH CONSTRUCTION Original- Filed June 6, 1928 4 Sheets-Sheet 3 :'I:: II I I I I I II I I l I I I f I I I I I I I I I I I I l I I I I I I I I I I I I I I I l I avwemtoz uuuuu I uuuun i i J Z Inuuuu Api-i'l 771931. H. L. FELDBLET 1,799,505

FORM AND FORM HOLDER FOR CONCRETE WALL AND ARCH CONSTRUCTION v Original Filed June 6, 1928 4 Sheets-Sheet 4 .2. 9 7? v I W i avwautoz WM I M Patented Apr. 7, 1931" i I I l I 1399505 I I I HERMANHILYFELDBLET, You. N. v.

r am Ania roam smegma ooncnnrn WALL annjancn: consrnuo'rion l Ap'pneatio mea time e, 1928, serialfn'o. 553,181; Renewed September 6, 1930. This invention relates to formsandf form For roof construction the same principles holders for constructing specified 'concrete apply excepting that the wet 'c'oncreteload walls and arches under varying conditions so may be transferred to the clamps,fwhich are that'the wall thickness'at the'arch is always an integral part of the form holders, orthe 6 the required value regardless of thedepth 0f l t 103d m yb i P Y 011 h the column or thatef the sustaining beam; vformhol a p y y a fi ed r iAnother object includes *the provision of able support under the core 'portion of the simplebut inexpensive standardio'rI-hs for f rm ass mbly jackarchesv and means for supporting said Otherv bi pp a r inaf r and. in farm at varyingde ths. 1 r I I I I f- A further object'includes the rovision-er l n h omp yi g. dr w ngs in a simple and efficient form-"holding device Whleh I I I 1 Y I I having an for t o il aheh i-ihg gaid Figure 1s a sectional view of aconcrete evice to a column or girder member at varyo ce gr wing j my. i pr ed, I I mg 'depths,fto thereb Support the arch forms form and'form holders vstill i p s io -mom 5 Ma fixed distance-from'the outer wauzsurof the arches. 1 I I I Y face 'or of the'fi'oor, of the finishedw'all or E g- 2 1s a plan view 'o fthe construction arch. I a, shown 1n Fig. lviewed from the arched side.-

I The forms and form holders are intended -Fig. 3 ishan enlarged section? View flfithe primarily for the construction of concrete Ol 'Q B f rm and form holding device; side walls and roof of subways. The section F 'g- 1 is a plan View looking down onthe of both sidewall and roof consists of an arch II PIH OH OfFig II x 1 r of s ecified depth or thickness andheldbe- F g- 5 is a vi w substantially n he l n tween'steel columns, or beams. It so hap- *5 0f-Fig. '3. I

pens that in the case of the-side walls, on ac- Fig 6 is a" partial plan view' of the con- 5 countof the fact that the eo lurn ns vary in filllptlon shown 1n Fig. 5. s it I depth as well as in flange width, it is neces= F1g.:7 1s a view in perspectiveshowingmy sary to provide form holders with adjustable neWIform holder attached to the flange'of a features both longitudinallyand in depth to Column 01' girder. h f I I 1 r thus provide against these variations and I Fig. 8 is a face-view ofthe form holder accomplish these objects by my con t uction of Fig. 7 without the column or girder and shown herein. I 7 showing an'adjacent formholder. V a

Aside from the adjustment feature which Fig. 9is a view inpers pecti've of two secis incorporated specifically in the boltsand tions of forms and adjacent girders with my associated parts, the clamps, which are a part fo m holders applied thereto.-

frth f r h ld ve to atta h th hold- Fig. 10 is a sideelevation showing adjacent ers to the columns and eventually transfer f rm holders, and i the load entailed by pouring-wet concrete Fig. 11 is a viewfrom line 1l11 of Fig b k of th f w rk to the olumn thus 10 looking in the direction of the arrows.

40 eliminating the necessity of exterior brac- Like numerals refer to similar ilparts '3 ng to hold the forms 1n position. Longituhr g fi v m Views 7;

d nal ad ustment, which is necessary on .ac- In construct ng concrete walls for subways I countof variable flange width of column, is and the like, ithas heretoforebeenthe prac- I taken care of by lapping the "outstanding tice to use standard forms forthearches be leg of the form holder over the core portion tween. definitely placed H columns having sf of the form which is inserted between the substantially uniform'websthereby 'provid- I holders. Once theholders are attached to ing' for walls of'required thickness: With the columns and the core is inserted between the use, however, of columns of varying di-' said holders, the longitudinal variation in 'inensi'ons and forms of standard width it is as width is automatically takenqcare on i not possiblesto. build the wallsof. the. re-

I obtain these object s-by the construction 1 7 I have illustrated, in Fig. 1, a sectional view I of concrete wall constructionlO, in which my new form holders ll and concrete forms 12 are employed to obtain an arched wall, or floor, of specified thickness :22 with no waste of concrete.

It is evident that if the given thickness :12

of the concrete wall, or floor, is to be a constant factor for a given wall, or floor, and that if the web it of the columns 13 varies that provision must be made to meet this variation in depth, my new adjustable form holder 11 provides means to meet these conditions as will presently appear more fully. The over-hanging leg m of said form holder provides also means for compensating for variations in the flange n. of the column or girder 13, as appears clearly in Fig. 3.v

Apreferred type of form holder 11 comprisesa trough shaped member of sheet metal, or other suitable material, having an arched over-hanging leg m, a side wall wand bottom 0. A reinforcement plate 39 at'either end of holder 11, and'if desired also at a midway position is provided to strengthen the holder. Near either end is the adjustable clamp member 20 having jaws 21 and 22 extending through a slot in wall w to engage the flange n of the column or girder. The clamp may be held at varying positions on the flange by a set screw 23. At suitable positions on the arched member m and the bottom 0 there is screwed a screw threaded bolt 24 having a nut 25 between the loosely fitting fingers 26 and 27 of clamp 20. It will be noted that by adjusting nut 25 the form holder is adjusted in order to properly hold form 12.for the required thickness of the wall .10 (Fig. 1) or roof (not indicated in Fi 9) On the bottom of the form holders 11 I provide brackets 31 to receive form supporting bars 32. These bars may be angle" irons and are dropped into positionv when forms 12 have been placed into position.

The concrete supporting forms 12 may beof suitable length and of standard width to fit between the form holders. Any mode of construction, such as wood frame covered by metal roof 34 and supported or held in position by blocks 35 resting. on the form sup porting bars 32 will serve the purpose. In

the roof form of Fig. 9'for example,the concretesupporting form may be supported from the form holders 11, or the. weightv may be carried on frame 41,twhich if necessary or desirable maybe supported on a'movable support as a car or other means (not shown). It is understood that any desired number of form holders may be clamped end to end on ferred forms or" construction for the application of my invention, I do not thereby desire to be understood as having thus limited myself as various modifications falling wholly within the spirit and scope of my invention will suggest themselves to those versed in the art. 7

What'I claim therefore as new and useful and desire to secure by Letters Patent is:

1. In concrete construction the combination ofconcrete supporting forms of substantially similar dimensions andclamping members having an arched roof to connect with said forms and vertically movable clamping means having clamping jaws to engage the flange of a column or girder and means for varying the positions of .said clamping jaws. I I I 2. In concrete construction the combination of concrete supporting forms of sub stantially similar dimensions and clamping members having an arched roof to connect with said forms and vetrically movable clamping means having clamping jaws to engage the flange of a column or girder and means for positioning said forms at a required depth.

3. A form holder for supporting concrete forms at a specified depth comprising a trough like member with a floor and a side wall having slots therethrough, clamping means extending through said wall," and means in said trough for varying the position of said clamping means in said slot.

4. A form holder for supporting concrete forms at a specified depth comprising a trough like member with a floor and a side wall having slots therethrough the upper side of said trough being free to overhang said floor, clamping jaws extending from said slot, and means in said trough for adjusting the position of said clamping jaws. 5. A form holder for supporting concrete forms at a specified depth comprising a trough like member with a floor, a side wall and an overhanging arch to engage concrete forms at varying positions, flange engaging means adjustably carried by said trough g threaded bolt secured thereon, a nut on said bolt and clamping means havingfingers on 1 said bolt on either side of said nut lor holding said form holder at desired positions.

In testimony whereof I have hereunto set niyhand on this22nd day of May, A. D. 1928.

HERMAN'L. FELDBLET. I 

